Buffer for boats.



PATENTED SEPT. 19, 1905.

F. GRIMM.

BUFFER FOR BOATS. APPLICATION FILED JULY 25.1904.

2 SHEETS-SHEET 1.

No. 799,645. PATENTED SEPT. 19, 1905.

F. GRIMM.

BUFFER FOR. BOATS.

APPLICATION FILED JULY 25.1904.

2 SHEETS-SHEET 2.

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FREDERICK GRIMM, OF ST. LOUIS, MISSOURI.

BUFFER FOR BOATS.

Specification of Letters Patent.

Patented Sept. 19, 1905.

Application filed J ly 25, 1904. Serial No. 217,920.

T at whom it may concern.-

Be it known that I, FREDERICK GRIMM, a citizen of the United States, and a resident of St. Louis, Missouri, have invented certain new and useful Improvements in Buffers for Boats to Render Harmless Conditions at Sea or in Harbors, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in buffers for boats and it consists of the novel features herein shown,described, and claimed.

In the drawings, Figure 1 is a sectional elevation on the line 1 1 of Fig. 2 and looking in the direction indicated by the arrow. Fig. 2 is a horizontal section on the line 2 2 of Fig. 1 and looking downwardly. Fig. 3 is a detail perspective, upon an enlarged scale, showing the sliding connection between the buffer and the boat. Fig. 4 is a vertical central sectional detail of one of the buffers and taken upon the line 4 4 in Fig. 1. Fig. 5 is a horizontal section of one of the side buffercasings as taken upon the line 5 5 in Fig. 1 with the bufler removed. Fig. 6 is a side elevation showing a modified construction.

Referring to the drawings in detail, the

1 forward end of the boat is represented by the posts 13 and 14, guide-rods 19 extending forwardly from the seat 17, and similar guiderods 20 extend/ forwardly from the seat 18. Expansive coil-springs 21 are mounted upon the guide-rods 19 against the spring-seat 17, and similar springs 22 are mounted upon the guide -rods 20 against the spring-seat 18. Intermediate spring seats 23 and 24 are mounted upon the guide-rods 19 and 20 against the springs 21 and 22. Springs 25 are mounted upon the guide-rods 19 against the spring-seats 23, and springs 26 are mounted uponthe guide-rods 20 against the springseat 24. A spring-seat 27 is mounted upon the guide rods 19 against the front ends of the springs 25, and a similar spring-seat 28 The postsis mounted upon the guide-rod 20 against the springs 26.

A bifurcated bar 29 extends from near the upper end of the post 12 to near the upper end of the post 15, there being a longitudinally-extending horizontal slideway 30 nearly the entire length of-said bar. A similar bar 31 extends from near the lower end of the post 12 to near the lower end of the post 15 and forms the horizontal slideway 32. Cross-bars 33 and 34 are mounted in the .slideways 30 and 32, said cross-bars connecting the spring-seats 27 and 28. The upper buffer-supporting arm 35 is bifurcated to straddle the post 12 and the bar 29, and the rear end of said arm is connected to the crossbar33.

Pins 36 are inserted through the bar 35 and through the slideway 30 to hold the arm 35 in its horizontal plane. The lower buffersupporting arm 37 is bifurcated to straddle the post 12 and is connected to the crosspiece 34, and pins 38 are inserted through the ar and through the slideway 32. Pins are inserted through the posts 12 immediately above and below the bar 35 to form metal bearings between which the arm may slide, there being heads 39 upon said pins, said heads extending upwardly and downwardly upon both sides of the arm to prevent lateral motion. Similar pins form bearings for the bar 37, and similar heads 40 prevent lateral motion of said bar 37. The forward buffer 41 is mounted upon a shaft 42, and said shaft is ournaled in bearings in the forward ends of the bars 35 and 37. The body of the buffer is a hollow cylinder, and this cylinder is mounted upon the heads 43 and 44 and the central wheel 45, the shaft 42 being inserted through the heads 43 and 44 and through the wheel 45. The side buffers 46 and 47 are identical in construction with the buffer 41; but the shafts of the side buffers are rigidly mounted in the bearings 48 formed integral with the semicircular casings 49, said casings 49 being embedded in the side of the boat, so that only a part of the buffer is exare slidingly mounted in the slots 51, and the r blocks.

The spring-seat 53 extends up and down through the arms 49 and 50 in the slots 51 against the forward ends of the springs 48 and against the rear ends of the sliding b ocks 52, so that when the buffer 41 strikes an obstruction the springs 48 are compressed.

This construction is suitable for all kinds of boats.

I desire to call particular attention to the fact that I have provided a rotary forward buffer mounted upon a vertical axis and yieldingly connected to the boat, so that when the buffer strikes an obstruction the yielding connection will reduce the impact upon the boat.

I claim 1. In a buffer for boats, the combination with a boat, of vertical posts 13 and 14 mounted in transverse alinement between the sides of the boat; a third vertical post 15 mounted between the posts 13 and 14; the bifurcated bars 29 and 31 extending forwardly from the post 15; the cross-bars 33 and 34 slidingly mounted in the bars 29 and 31; spring-seats 27 and 28 connecting the cross-bars 33 and 34 springs between the spring-seats 27 and 28 and the posts 13 and 14; the buffer-supporting arms 35 and 37 extending forwardly from the cross-bars 33 and 34 through the wall of the boat; and the buffer carried by the buffer-supporting arms.

2. In a buffer for boats, the combination with a boat, of the posts 13 and 14 mounted in transverse alinement between the sides of the boat; the third post 15 mounted between the posts 13 and 14 the spring-seats 17 and 18 mounted against the front faces of the posts 13 and 14; guide-rods 19 and 20 extending forwardly from the seats 17 and 18; coil-springs 21 and 22 upon the guide-rods 19 and 20; intermediate spring-seats 23 and 24 mounted upon the guide-rods against the springs 21 and 22 the springs 25 and 26 mounted upon the guide-rods against the spring-seats 23 and 24; the spring-seats 27 and 28 mounted upon the guide-rods against the springs 25 and 26; the bifurcated bars 29 and 31 extending forwardly from the post 15; cross-bars 3 and 24 slidingly mounted in the bars 29 and 31 against the front faces of the spring-seats 27 and 28; the buffer-supportin arms 35 and 37 slidingly connected to the bifurcated bars 29 and 31 and engaging the cross-bars 33 and 34 and extending forwardly through the wall of the boat; and a rotary buffer 41 carried by the forward ends of said buffer-supporting arms.

In testimony whereof I have signed my name to; this specification in presence of two subscribing witnesses.

FREDERICK GRIMM.

Witnesses:

ALFRED A. EIOKS, EDWARD E. LONGAN. 

